* S&P 500, Dow hit lowest since Aug. 24
* Energy stocks lead drop as oil falls 5 pct
* All 30 Dow stocks in the red
* Intel down on growth worries, hits chip stocks
* Indexes down: Dow 2.55 pct, S&P 2.57 pct, Nasdaq 3.34 pct (Adds details, updates prices)
By Abhiram Nandakumar
Jan 15 U.S. stocks sank in volatile trading on Friday, with the S&P 500 hitting its lowest since Aug. 24 and the Dow dropping more than 400 points, as oil prices dived below $30 per barrel.
All 10 major S&P sectors in the red and all 30 Dow components lower. The Russell 2000 small-cap index fell as much as 3.1 percent to its lowest since July 2013.
The beaten-down energy sector's 3.36 percent slide led the declines, as oil prices fell 5 percent. The technology sector was down 3.44 percent, as Intel's weak report weighed heavily on chip stocks.
"When we started off the year, we were at the crossroads of concern and optimism and clearly, we've gone down the road of concern pretty quickly," said Dan Farley, regional investment strategist at U.S. Bank Wealth Management in Minneapolis.
U.S. economic data on Friday was also not very encouraging, with an unexpected drop in retail sales and industrial output declining again in December, underscoring a worsening outlook for fourth-quarter economic growth.
At 12:08 p.m. ET (1708 GMT), the Dow Jones industrial average was down 418.05 points, or 2.55 percent, at 15,961.
The S&P 500 was down 49.46 points, or 2.57 percent, at 1,872.38. It fell to a low of 1,869.53.
The Nasdaq Composite index was down 154.21 points, or 3.34 percent, at 4,460.80. It hit its lowest since Aug. 24.
The S&P 500 has fallen 12.3 percent and the Dow 13.1 percent from their highs in May, pushing them into what is generally considered as 'correction territory'.
The CBOE volatility index jumped as much as 29.2 percent to 30.95, it's highest since September.
Dow components Exxon and Chevron were down 2-4 percent, while Caterpillar dropped 4 percent.
Intel tumbled 9 percent to $29.66 after its results and forecast raised concerns about the chipmaker's growth. That weighed on the chip index, which fell 4.5 percent, its steepest drop since March.
Citigroup was down 6.5 percent at $42.44, while Wells Fargo fell 3.2 percent to $49.04, after reporting largely in-line quarterly earnings.
Wynn Resorts was the among the very few bright spots, rising 9.1 percent to $56.28 after reporting in-line of quarterly revenue.
Declining issues outnumbered advancing ones on the NYSE by 2,823 to 251. On the Nasdaq, 2,491 issues fell and 295 advanced.
The S&P 500 index showed no new 52-week highs and 115 new lows, while the Nasdaq recorded four new highs and 428 lows. (Reporting by Abhiram Nandakumar in Bengaluru; Editing by Savio D'Souza)